device-common: Do not strip signed GKI modules am: 43bc0091db am: b4b0b7a60d

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2422895

Change-Id: Ice130ebf31744cd7e1459862080904b22f6a2f23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>